Marc tosses a coin until “Heads” appear for the second time. He is interested in the number of “Tails” which appear before the second appearance of “Heads.” Then, a suitable sample space for this experiment is

(a) {0, 1, 2,…}

(b) {0, 1, 2}

(c) {1, 2}

(d) {2, 3,…}

(e) {1, 2,…}.